Small-angle dazzling light source
By integrating multiple lamp beads in the light source and shaping the light beams with array lenses, and combining beam expansion lenses to achieve small angle exit, the existing light source has solved the problems of large divergence angle, short life, and high power consumption, and the effects of long-lived, low power consumption and long-distance glare irradiation are achieved.
Patent Information
- Application Number
- CN202411765446.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-03-14
AI Technical Summary
The divergence angle of existing light sources is large, resulting in short life, high power consumption, low reliability, and the inability to achieve a long glare illumination distance.
By integrating multiple lamp beads on the substrate and shaping the light beam with an array lens group and a positive lens, a small size focus point is formed, and the light source is emitted at a small angle in conjunction with the beam expansion lens.
The light source has long life, small angle, low power consumption, and can achieve a longer glare illumination distance, compress the divergence angle below 2°, greatly reducing power consumption and weight.
Smart Images
Figure CN119617335A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of optical design, in particular to a small-angle glare light source. Background Art
[0002] Traditional halogen lamps and xenon lamps have a large light emission angle, resulting in high power consumption, short irradiation distance, and short life. Some LED light sources use an array arrangement of multiple lamp beads, and each lamp bead is individually distributed. The divergence angle that can be achieved is 5-10°, which is still relatively large, so it is impossible to achieve a long glare irradiation distance. There is also a light source that uses blue laser to excite fluorescence to produce white light, which can achieve a smaller light emission angle, but its electro-optical conversion efficiency is low, the heat dissipation is large, and the reliability is low. Therefore, a glare light source with long life, small angle, low power consumption and long irradiation distance is needed. Summary of the invention
[0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a small-angle glare light source. The present invention provides a small-angle glare light source with long life, small angle and low power consumption.
[0004] To achieve the above-mentioned and other related purposes, the present invention provides a small-angle glare light source, comprising:
[0005] A radiator, which is provided in plurality;
[0006] A housing, mounted on one end of the plurality of radiators;
[0007] The light source optical system is installed at one end of the housing far away from the radiator, and the light source optical system is installed inside the housing.
[0008] In one embodiment of the present invention, the light source optical system comprises:
[0009] A substrate, on which a plurality of lamp beads are integrated, wherein the lamp beads are used to emit light sources;
[0010] Along the emitting direction of the light source, the substrate is sequentially arranged with an array lens group, a positive lens, and a beam expander lens.
[0011] In one embodiment of the present invention, the center of the substrate, the center of the array lens group, the center of the positive lens, and the center of the beam expander lens are on an optical axis.
[0012] In one embodiment of the present invention, the array lens group shapes the light source through two groups of array lenses with different parameters to cooperate with the positive lens.
[0013] In one embodiment of the present invention, a plurality of the lamp beads are connected in series.
[0014] In one embodiment of the present invention, the substrate is further provided with positive and negative electrodes of a plurality of the lamp beads connected in series.
[0015] In one embodiment of the present invention, the two groups of array lenses with different parameters include a first array lens and a second array lens, the first array lens is located in a first plane, the second array lens is located in a second plane, the first plane is parallel to the second plane and is located on the X-axis, and the interval between the first array lens and the second array lens in the Y-axis direction is d.
[0016] In one embodiment of the present invention, the first array lens includes a plurality of first array lens units, the second array lens includes a plurality of second array lens units, the spacing AAn of the first array lens units is greater than the spacing BBn of the second array lens units, and the light source converges at point S after passing through the array lens.
[0017] In one embodiment of the present invention, assuming that the central axis of the central array lens unit A of the first array lens is collinear with the Y axis, the focal length (BS+d) of the central array lens unit A is smaller than the focal length SAn of the nth array lens unit extending outward from the central array lens unit A. The formula of the focal length SAn is:
[0018] Wherein, SAn is the focal length of the nth array lens unit extending outward from the central array lens unit A, AAn is the spacing value between the central array lens unit A and the nth array lens unit extending outward, (BS+d) is the focal length of the central array lens unit A, and d is the spacing between the first array lens and the second array lens in the Y-axis direction;
[0019] The focal length SAn also includes the formula: Among them, θ n It is the angle between the central array lens unit A and the nth array lens unit extending outward from the central array lens unit A about the focusing point S.
[0020] In one embodiment of the present invention, the central axis of the central array lens unit B of the second array lens is collinear with the Y axis, and the focal length BS of the central array lens unit B is obtained. The formula for the focal length SBn of the nth array lens unit is: BBn is the spacing between the central array lens unit B and the nth array lens unit extending outward, and BS is the focal length of the central array lens unit B passing through the Y axis;
[0021] The focal length SBn also includes the formula: in, It is the angle between the central array lens unit B and the nth array lens unit Bn extending outward from the central array lens unit B about the focusing point S.
[0022] As described above, a small-angle glare light source of the present invention has the following beneficial effects:
[0023] (1) The small-angle glare light source of the present invention comprises a heat sink, a housing, and a light source optical system. The present invention has a long service life, a small angle, low power consumption, and a long irradiation distance.
[0024] (2) The small-angle glare light source of the present invention uses an array lens group and a positive lens to perform beam shaping to reduce the size of the light-emitting point and increase the light intensity of the light-emitting point, thereby achieving a smaller divergence angle and a farther glare irradiation distance, and the weight of the light source is greatly reduced, and the power consumption is also greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 A structural diagram of a small-angle glare light source provided in an embodiment of the present application.
[0026] Figure 2 A structural diagram of a light source optical system for a small-angle glare light source provided in an embodiment of the present application.
[0027] Figure 3 A structural diagram of a substrate for a small-angle glare light source provided in an embodiment of the present application.
[0028] Figure 4 A structural diagram of a two-dimensional light path of an array lens group for a small-angle glare light source provided in an embodiment of the present application.
[0029] Component number description
[0030] 1 Radiator
[0031] 2 Housing
[0032] 3 Light source optical system
[0033] 31 substrate
[0034] 32 Array lens group
[0035] 33 Positive lens
[0036] 34 Beam Expander Lens
[0037] 312 lamp beads
[0038] 313 Positive and negative poles DETAILED DESCRIPTION
[0039] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.
[0040] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic manner, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.
[0041] Terms such as first or second can be used to describe various components, but these components are not limited by the above terms. The above terms are used to distinguish one component from another component, for example, without departing from the scope of the concept according to the present disclosure, a first component can be referred to as a second component, and similarly, a second component can be referred to as a first component.
[0042] In addition, "connected / coupled" means that one component is directly electrically coupled to another component or is indirectly electrically coupled through another component. The singular form may include the plural form unless explicitly stated in the sentence. In addition, "include / comprise" or "includes / comprises" used in this specification indicates that one or more components, steps, operations, and elements exist or have been added. The specific structural or functional descriptions of the examples of the implementation of the concepts disclosed in this specification are only illustrated to describe the examples of the implementation of the concepts, and the examples of the implementation of the concepts can be implemented in various forms, but these descriptions are not limited to the examples of the implementation described in this specification.
[0043] According to the concept, various modifications and changes can be applied to the examples of the embodiments, so that the examples of the embodiments will be illustrated in the drawings and described in the specification. However, the examples of the embodiments according to the concept are not limited to the specific embodiments, but include all changes, equivalents or replacements included in the spirit and technical scope of the present disclosure.
[0044] It should be understood that when an element is described as being "coupled" or "connected" to another element, the element may be directly coupled or directly connected to the other element, or may be coupled or connected to the other element through a third element. Conversely, it should be understood that when an element is referred to as being "directly coupled to" or "directly coupled to" another element, no other element is placed between them. Other expressions describing the relationship between components (i.e., "between" and "directly between" or "adjacent to" and "directly adjacent to") need to be interpreted in the same manner.
[0045] The terms used in this specification are only used to describe specific examples of the embodiments and are not intended to limit the present disclosure. If there is no clear opposite meaning in the context, the singular form may include the plural form. In this specification, it should be understood that the term "including" or "having" indicates the presence of the features, quantities, steps, operations, components, parts or combinations thereof described in the specification, but the possibility of the presence or addition of one or more other features, quantities, steps, operations, components, parts or combinations thereof cannot be precluded.
[0046] If there is no contrary definition, all terms (including technical terms or scientific terms) used herein have the same meaning as those generally understood by ordinary technicians in the field. If the terms defined in the commonly used dictionary are not clearly defined in this specification, they should be interpreted as having the same meaning as in the context of the relevant technology, and not interpreted as ideal or overly formal meanings.
[0047] Descriptions of well-known components and processing techniques may be omitted so as not to unnecessarily obscure the embodiments of the disclosure.
[0048] Throughout the specification, the same reference numerals refer to the same elements. Thus, even if a reference numeral is not mentioned or described with reference to one figure, it may be mentioned or described with reference to another figure. Furthermore, even if a reference numeral is not shown in one figure, it may be mentioned or described with reference to another figure.
[0049] In addition, the logic level of the signal may be different or opposite to the described logic level. For example, a signal described as having a logic "high" level may alternatively have a logic "low" level, and a signal described as having a logic "low" level may alternatively have a logic "high" level.
[0050] The following will describe the various embodiments of the present disclosure in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present disclosure, many technical details are provided in order to enable the reader to better understand the present disclosure. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present disclosure can be implemented.
[0051] In order to overcome the deficiencies in the background technology, the present invention provides a small-angle glare light source, which overcomes a series of shortcomings of the background technology such as short life, large divergence angle, high power consumption, low reliability, and short irradiation distance, and realizes long-distance irradiation of glare light sources.
[0052] To achieve the above purpose, a small-angle glare light source of the present invention uses multiple lamp beads integrated in series on a substrate. The lamp beads integrated on the substrate are firstly shaped by an array lens group and a positive lens to form a small-sized focal point behind the lens, which effectively improves the light intensity of the light-emitting point. The light at the focal point continues to propagate through the beam expander lens and then emerges at a small angle. The relationship between the various parameters in the expanded light source collimation system and the divergence angle (half angle) θ0 of the emergent light beam is: Wherein, d is the diameter of the light source, and f' is the focal length of the beam expander lens. It can be seen from the above formula that the smaller the focal point size, the larger the focal length of the beam expander lens, and the smaller the final divergence angle of the light source, which means that the energy is more concentrated, and thus the glare irradiation distance is farther. Through a small-angle glare light source of the present invention, the divergence angle of the light source can be compressed to below 2°, thereby achieving small-angle glare irradiation of the light source, compressing the divergence angle of the white light glare light source and increasing the glare irradiation distance, while greatly reducing the power consumption of the light source.
[0053] See also Figure 1 , Figure 1 A structural diagram of a small-angle glare light source provided in an embodiment of the present application. The present invention provides a small-angle glare light source, comprising a heat sink 1, a housing 2, and a light source optical system 3, wherein a plurality of heat sinks 1 are provided; the housing 2 is mounted at one end of the plurality of heat sinks 1; the light source optical system 3 is mounted at one end of the housing 2 away from the heat sink 1, and the light source optical system 3 is mounted inside the housing 2.
[0054] See also Figure 2 , Figure 2 A structural diagram of a light source optical system for a small-angle glare light source provided in an embodiment of the present application. The center of the substrate 31, the center of the array lens group 32, the center of the positive lens 33, and the center of the beam expander lens 34 are on an optical axis, and along the light source emission direction, the substrate 31 is sequentially arranged with the array lens group 32, the positive lens 33, and the beam expander lens 34.
[0055] See also Figure 3 , Figure 3 A structural diagram of a substrate for a small-angle glare light source provided in an embodiment of the present application. The light source optical system 3 includes a substrate 31, on which a plurality of lamp beads 312 are integrated, and the lamp beads 312 are used to emit light sources, and the array lens group 32 shapes the light source through two groups of array lenses with different parameters to cooperate with the positive lens 33.
[0056] Specifically, the array lens group 32 shapes the light emitted by the lamp beads through two groups of specially designed array lenses with different parameters, and is used in conjunction with the positive lens 33 to converge the light beam to a point where the energy is more concentrated, greatly reducing the size of the focal point and improving the luminous intensity of the focal point.
[0057] Specifically, 19 lamp beads 312 are integrated on the substrate 31 , and these lamp beads 312 are used in series, with a total power of 400 watts.
[0058] Specifically, the light emitted by the lamp beads 312 integrated on the substrate 31 is beam shaped by the array lens group 32 and the positive lens 33 to form a focusing point with a small size and high light intensity, which is 21 mm away from the positive lens and has a diameter of 9 mm. This is a key measure to achieve the compression of the divergence angle of the light source.
[0059] Specifically, the light at the focused point continues to propagate, and after passing through the beam expander lens with a focal length of 290 mm, it is emitted at a small angle of less than 2° divergence angle, which greatly compresses the divergence angle of the light source, thereby effectively increasing the glare illumination distance, making the glare illumination distance exceed 6 km.
[0060] Specifically, the weight of the light source optical system 3 is only 0.3 kg.
[0061] The plurality of lamp beads 312 are connected in series. The substrate 31 is also provided with positive and negative electrodes 313 of the plurality of lamp beads 312 connected in series.
[0062] See also Figure 4 , Figure 4A structural diagram of the two-dimensional optical path of an array lens group for a small-angle glare light source provided in an embodiment of the present application. The two groups of array lenses with different parameters include a first array lens and a second array lens, the first array lens is located in a first plane, namely the P plane, the second array lens is located in a second plane, namely the Q plane, the first plane is parallel to the second plane and is located on the X-axis, and the interval between the first array lens and the second array lens in the Y-axis direction is d. The first array lens includes a plurality of first array lens units, the second array lens includes a plurality of second array lens units, the spacing AAn of the first array lens units is greater than the spacing BBn of the second array lens units, and the light source converges at point S after passing through the array lens. Assuming that the central axis of the central array lens unit A of the first array lens is collinear with the Y-axis, the focal length (BS+d) of the central array lens unit A is obtained to be less than the focal length SAn of the nth array lens unit extending outward from the central array lens unit A, and the formula of the focal length SAn is:
[0063] Wherein, SAn is the focal length of the nth array lens unit extending outward from the central array lens unit A, AAn is the spacing value between the central array lens unit A and the nth array lens unit extending outward, (BS+d) is the focal length of the central array lens unit A, and d is the spacing between the first array lens and the second array lens in the Y-axis direction;
[0064] The focal length SAn also includes the formula: Among them, θ n It is the angle between the central array lens unit A and the nth array lens unit extending outward from the central array lens unit A about the focusing point S.
[0065] The central axis of the central array lens unit B of the second array lens is collinear with the Y axis, and the focal length BS of the central array lens unit B is obtained. The formula for the focal length SBn of the nth array lens unit is: BBn is the spacing between the central array lens unit B and the nth array lens unit extending outward, and BS is the focal length of the central array lens unit B passing through the Y axis;
[0066] The focal length SBn also includes the formula: in, It is the angle between the central array lens unit B and the nth array lens unit Bn extending outward from the central array lens unit B about the focusing point S.
[0067] Assume that the spacing between adjacent lamp beads is a, the spacing between adjacent first array lens units is b, and the spacing between adjacent second array lens units is c. Through the above specific design, and when a≥b≥c is satisfied, multiple lamp beads can be focused on a point with high energy density.
[0068] The small-angle glare light source of the present invention, the light of the focus point continues to propagate, and after passing through the beam expander lens with a focal length of 290mm, it is emitted at a small angle with a divergence angle of less than 2°, which greatly compresses the divergence angle of the light source, thereby effectively increasing the glare irradiation distance, making the glare irradiation distance exceed 6km. The small-angle glare light source of the present invention, the weight of the light source optical system (excluding the housing and the heat sink) is only 0.3kg.
[0069] In summary, the small-angle glare light source of the present invention includes a heat sink, a housing, and a light source optical system. The present invention has a long service life, a small angle, low power consumption, and a long irradiation distance. The small-angle glare light source of the present invention uses an array lens group in conjunction with a positive lens to perform beam shaping to reduce the size of the luminous point and increase the light intensity of the luminous point, thereby achieving a smaller divergence angle and a longer glare irradiation distance, and the weight of the light source is greatly reduced, and the power consumption is also greatly reduced.
[0070] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.
Claims
1. A small-angle glare light source, characterized in that: include: A radiator (1), which is provided in plurality; A housing (2) mounted on one end of the plurality of radiators (1); A light source optical system (3) is installed at one end of the housing (2) away from the heat sink (1), and the light source optical system (3) is installed inside the housing (2).
2. A small-angle glare light source according to claim 1, characterized in that: The light source optical system (3) comprises: A substrate (31) on which a plurality of lamp beads (312) are integrated, wherein the lamp beads (312) are used to emit light sources; Along the emitting direction of the light source, the substrate (31) is sequentially arranged with an array lens group (32), a positive lens (33), and a beam expander lens (34).
3. A small-angle glare light source according to claim 2, characterized in that: The center of the substrate (31), the center of the array lens group (32), the center of the positive lens (33), and the center of the beam expander lens (34) are on an optical axis.
4. A small-angle glare light source according to claim 2 or 3, characterized in that: The array lens group (32) shapes the light source through two groups of array lenses with different parameters, so as to be used in conjunction with the positive lens (33).
5. A small-angle glare light source according to claim 2, characterized in that: The plurality of lamp beads (312) are connected in series.
6. A small-angle glare light source according to claim 5, characterized in that: The substrate (31) is also provided with positive and negative electrodes (313) of a plurality of the lamp beads (312) connected in series.
7. A small-angle glare light source according to claim 4, characterized in that: The two groups of array lenses with different parameters include a first array lens and a second array lens, the first array lens is located in a first plane, the second array lens is located in a second plane, the first plane is parallel to the second plane and is located on the X-axis, and the interval between the first array lens and the second array lens in the Y-axis direction is d.
8. A small-angle glare light source according to claim 7, characterized in that: The first array lens includes a plurality of first array lens units, the second array lens includes a plurality of second array lens units, the spacing AAn of the first array lens units is greater than the spacing BBn of the second array lens units, and the light source converges at point S after passing through the array lens.
9. A small-angle glare light source according to claim 8, characterized in that: Assuming that the central axis of the central array lens unit A of the first array lens is collinear with the Y axis, the focal length (BS+d) of the central array lens unit A is smaller than the focal length SAn of the nth array lens unit extending outward from the central array lens unit A. The formula of the focal length SAn is: Wherein, SAn is the focal length of the nth array lens unit extending outward from the central array lens unit A, AAn is the spacing value between the central array lens unit A and the nth array lens unit extending outward, (BS+d) is the focal length of the central array lens unit A, and d is the spacing between the first array lens and the second array lens in the Y-axis direction; The focal length SAn also includes the formula: Among them, θ n It is the angle between the central array lens unit A and the nth array lens unit extending outward from the central array lens unit A about the focusing point S.
10. A small-angle glare light source according to claim 9, characterized in that: The central axis of the central array lens unit B of the second array lens is collinear with the Y axis, and the focal length BS of the central array lens unit B is obtained. The formula for the focal length SBn of the nth array lens unit is: BBn is the spacing between the central array lens unit B and the nth array lens unit extending outward, and BS is the focal length of the central array lens unit B passing through the Y axis; The focal length SBn also includes the formula: in, It is the angle between the central array lens unit B and the nth array lens unit Bn extending outward from the central array lens unit B about the focusing point S.